kSIST FprHD 629.2 S3:2023

SLOVENSKI STANDARD
oSIST prHD 629.2 S3:2023
01-marec-2023
Nadomešča:
SIST HD 629.2 S2:2006
SIST HD 629.2 S2:2006/A1:2009
Preskusne zahteve za pribor, ki se uporablja na elektroenergetskih kablih za
naznačene napetosti od 3,6/6(7,2) kV do vključno 20,8/36(42) kV - 2. del: Kabli,
izolirani z impregniranim papirjem
Test requirements for accessories for use on power cables of rated voltage from 3,6/6
(7,2) kV up to 20,8/36(42) kV - Part 2: Cables with impregnated paper insulation
Prüfanforderungen für Kabelgarnituren für Starkstromkabel 12 mit einer Nennspannung
von 3,6/6(7,2) kV bis 20,8/36(42) kV 13 Teil 2: Kabel mit massegtränkter
Papierisolierung
Prescriptions relatives aux essais sur les accessoires des câbles d'énergie pour des
tensions assignées de 3,6/6(7,2) kV à 20,8/36(42) kV - Partie 2: Câbles isolés au papier
imprégné
Ta slovenski standard je istoveten z: prHD 629.2 S3
ICS:
29.035.10 Papirni in kartonski izolacijski Paper and board insulating
materiali materials
29.060.20 Kabli Cables
oSIST prHD 629.2 S3:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prHD 629.2 S3:2023

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oSIST prHD 629.2 S3:2023


HARMONIZATION DOCUMENT DRAFT
prHD 629.2 S3
DOCUMENT D'HARMONISATION

HARMONISIERUNGSDOKUMENT

January 2023
ICS 29.060.20 Will supersede HD 629.2 S2:2006 (PART); HD 629.2
S2:2006/A1:2008 (PART)
English Version
Test requirements for accessories for use on power cables of
rated voltage from 3,6/6(7,2) kV up to 20,8/36(42) kV - Part 2:
Cables with impregnated paper insulation
To be completed Prüfanforderungen für Kabelgarnituren für Starkstromkabel
12 mit einer Nennspannung von 3,6/6(7,2) kV bis
20,8/36(42) kV 13 Teil 2: Kabel mit massegtränkter
Papierisolierung
This draft Harmonization Document is submitted to CENELEC members for enquiry.
Deadline for CENELEC: 2023-04-07.

It has been drawn up by CLC/TC 20.

If this draft becomes a Harmonization Document, CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for implementation of this Harmonization Document on a national level.

This draft Harmonization Document was established by CENELEC in three official versions (English, French, German).

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.

Warning : This document is not a Harmonization Document. It is distributed for review and comments. It is subject to change without notice
and shall not be referred to as a Harmonized Document.



European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Project: 74582 Ref. No. prHD 629.2 S3 E

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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
Contents Page
8 European foreword . 4
9 Introduction . 5
10 1 Scope . 6
11 1.1 General . 6
12 1.2 Type of accessories . 6
13 1.3 Rated voltage . 6
14 2 Normative references . 6
15 3 Terms and definitions . 7
16 4 Current . 9
17 5 Components . 9
18 5.1 Connectors . 9
19 5.2 Materials . 10
20 6 Test assemblies . 10
21 6.1 Identification . 10
22 6.1.1 Cables . 10
23 6.1.2 Connectors . 10
24 6.1.3 Accessories . 10
25 6.2 Cable conductor cross-section . 10
26 6.3 Assembly . 10
27 6.4 Terminations . 10
28 6.5 Terminal boxes . 11
29 6.6 Joints and stop ends . 11
30 6.7 Separable connectors . 11
31 6.8 Test arrangements and number of samples . 12
32 7 Range of compliance . 12
33 8 Test sequences . 14
34 8.1 General . 14
35 8.2 Dynamic short circuit performance . 14
36 9 Test results . 14
37 9.1 General . 14
38 9.2 Test reports . 14
39 9.3 Failures . 14
40 9.3.1 General . 14
41 9.3.2 Installation or procedure errors . 14
42 9.3.3 Bushing failure . 15
43 9.3.4 Cable failure . 15
44 Annex A (informative) Identification of test cable (paper insulated) (see 6.1.1 and 9.2) . 31
45 Annex B (informative) Identification of Connector (see 6.1.2 and 9.2) . 32
46 Bibliography . 33
47 Tables
48 Table 1 — Test cable conductor cross-sections for separable connectors . 12
49 Table 1A — Range of compliance for separable connectors . 13
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prHD 629.2 S3:2022 (E)
50 Table 2 — Indoor terminations for impregnated paper insulated cables (including shrouded terminations)
51 (see Figure 1) . 16
52 Table 3 — Outdoor terminations for impregnated paper insulated cables (see Figure 1) . 17
53 Table 4 — Joints for impregnated paper insulated cables (see Figure 2) . 18
54 Table 5 — Stop ends for impregnated paper insulated cables (see Figure 3) . 19
55 Table 6 — Screened separable connectors for impregnated paper insulated cables (see Figure 4) . 20
56 Table 7 — Unscreened separable connectors (excluding shrouded terminations) for impregnated paper
57 insulated cables (see Figure 5) . 22
58 Table 8 — Additional tests for non-circular conductor profile and/or insulation screen compliance (see 7.4
59 and 7.5) . 23
60 Table 9 — Additional tests for smallest and largest cable cross section compliance (see 7.1) . 24
61 Table 10 — Summary of test voltages (refer to Clause 7) . 25
62 Figures
63 Figure 1 — Test arrangements for terminations . 26
64 Figure 2 — Test arrangements for joints . 27
65 Figure 3 — Test arrangements for stop ends . 28
66 Figure 4 — Test arrangements for screened separable connectors . 29
67 Figure 5 — Test arrangement for unscreened separable connectors . 30
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
68 European foreword
69 This document (prHD 629.2 S3:2022) has been prepared by CLC/ TC 20 “Electric cables”.
70 This document is currently submitted to the Enquiry.
71 The following dates are proposed:
• latest date by which the existence of this (doa) dor + 6 months
document has to be announced at national level
• latest date by which this document has to be (dop) dor + 12 months
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) dor + 36 months
conflicting with this document have to be (to be confirmed or
withdrawn modified when voting)
72 This document will partially supersede HD 629.2 S2:2006 and all of its amendments and corrigenda (if any).
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
73 Introduction
74 This document has been written as part of a series of standards to satisfy the Public Procurement Directive,
75 and is complementary to HD 621, which covers impregnated paper insulated power cables from 3,6/6(7,2) kV
76 to 20,8/36(42) kV, inclusive.
77 This document defines the requirements which can be called up for joints, stop ends, separable connectors,
78 indoor and outdoor terminations when used with impregnated paper insulated power cables covered by
79 HD 621. The equivalent requirements for extruded power cables are given in HD 629.1 S2.
80 The test methods for these accessories are given in EN 61442.
81 The equivalent requirements for transition joints, when used between extruded insulated power cables and
82 impregnated paper insulated power cables covered by HD 620 and HD 621 or other relevant standards are
83 given in HD 629.3 S1.
84 Formerly, approvals of such products have been achieved on the basis of national standards and specifications
85 and/or the demonstration of satisfactory service performance. The publication of this document does not
86 invalidate existing approvals. However, products approved to such earlier standards or specifications cannot
87 claim approval to this document unless specifically tested to it.
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
88 1 Scope
89 1.1 General
90 This document specifies performance requirements for type tests for cable accessories for use on impregnated
91 paper insulated power cables as specified in HD 621.
92 It is not necessary to repeat these tests, once successfully completed, unless changes are made in the
93 materials, design or manufacturing process, which might affect the performance characteristics.
94 Accessories for special applications such as submarine cables, ships cables or hazardous situations (explosive
95 environments, fire resistant cables or seismic conditions) are not included.
96 Test methods are included in EN 61442:2005.
97 NOTE It might be possible, subject to agreement between supplier and purchaser, and/or the relevant conformity
98 assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this document,
99 provided an assessment is made of any additional type testing that might need to be carried out. Any such additional
100 testing that is part of a sequence of testing cannot be done separately.
101 1.2 Type of accessories
102 The accessories covered by this document are listed below:
103 — indoor and outdoor terminations of all designs, including terminal boxes;
104 — straight joints, branch joints and stop end joints of all designs, suitable for use underground or in air;
105 — screened or unscreened plug-in type or bolted-type separable connectors capable of interfacing with
106 bushing profiles as specified in EN 50180 and EN 50181.
107 1.3 Rated voltage
108 The rated voltages U /U(U ) of the accessories covered by this document are 3,6/6(7,2) - 3,8/6,6(7,2) -
0 m
109 6/10(12) - 6,35/11(12) - 8,7/15(17,5) - 12/20(24) - 12,7/22(24) - 18/30(36) - 19/33(36) - 20,8/36(42) kV where:
110 2 Normative references
111 The following documents are referred to in the text in such a way that some or all of their content constitutes
112 requirements of this document. For dated references, only the edition cited applies. For undated references,
113 the latest edition of the referenced document (including any amendments) applies.
114 EN IEC 61238-1-3, Compression and mechanical connectors for power cables - Part 1-3: Test methods and
115 requirements for compression and mechanical connectors for power cables for rated voltages above 1 kV (Um
116 = 1,2 kV) up to 36 kV (Um = 42 kV) tested on non-insulated conductors (IEC 61238-1-3)
117 EN 61442:2005, Test methods for accessories for power cables with rated voltages from 6 kV (Um = 7,2 kV)
118 up to 36 kV (Um = 42 kV) (IEC 61442:2005)
119 HD 621.S1, Medium voltage impregnated paper insulated distribution cables
120 EN 50655 (series), Electrical cables - Accessories - Material characterization
121 IEC 60050-461, International Electrotechnical Vocabulary - Chapter 461: Electric cables
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oSIST prHD 629.2 S3:2023
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122 3 Terms and definitions
123 For the purposes of this document, the terms and definitions given in IEC 60050-461 and the following apply.
124 ISO and IEC maintain terminology databases for use in standardization at the following addresses:
125 — ISO Online browsing platform: available at https://www.iso.org/obp
126 — IEC Electropedia: available at https://www.electropedia.org/
127 3.1
128 connector
129 device for connecting a conductor to an equipment terminal or for connecting two or more conductors to each
130 other
131 [SOURCE: EN IEC 61238-1 (IEV 461-17-03, modified)]
132 3.2
133 termination
134 device fitted to the end of a cable to ensure electrical connection with other parts of the system and to maintain
135 the insulation up to the point of connection
136 [SOURCE: IEV 461-10-01]
137 3.3
138 indoor termination
139 termination intended for use where it is not exposed to either solar radiation or weathering
140 [SOURCE: IEV 461-10-13]
141 3.4
142 outdoor termination
143 termination intended for use where it is exposed to either solar radiation or weathering or both
144 [SOURCE: IEV 461-10-14]
145 3.5
146 terminal box
147 air- or compound-filled box fully enclosing a termination
148 [SOURCE: IEV 461-10-03 modified]
149 3.6
150 shrouded termination
151 indoor termination with additional insulation at the bushing connection and used in an air-filled terminal box
152 [SOURCE: IEV 461-10-21]
153 3.7
154 joint
155 accessory suitable for use in air or underground which makes a connection between two or more insulated
156 power cables to form a continuous circuit
157 3.7.1
158 type I joint
159 joint suitable for use where an impact resistance withstand is not required
160 3.7.2
161 type II joint
162 joint which has an impact resistance withstand in accordance with this document
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
163 3.8
164 straight joint
165 accessory making a connection between two cables to form a continuous circuit
166 [SOURCE: IEV 461-11-01]
167 Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
168 3.9
169 branch joint
170 accessory making a connection of a branch cable to a main cable
171 [SOURCE: IEV 461-11-17]
172 Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
173 3.10
174 radial field joint
175 joint where the individual cores are screened throughout the joint
176 Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
177 3.11
178 non-radial field joint
179 joint which does not contain individual core screens
180 Note 1 to entry: For types of joint see 3.7.1 and 3.7.2.
181 3.12
182 stop end
183 accessory providing a means of insulating the unconnected end of an energized cable
184 [SOURCE: IEV 461-10-07 modified]
185 3.13
186 separable connector
187 fully insulated termination permitting the connection and the disconnection of a cable to other equipment
188 3.14
189 screened separable connector
190 separable connector which does not have a screened external surface
191 [SOURCE: IEV 461-10-15]
192 3.15
193 unscreened separable connector
194 separable connector which does not have an external screen
195 [SOURCE: IEV 461-10-15]
196 3.16
197 plug-in type separable connector
198 separable connector in which the electrical contact is made by a sliding device
199 [SOURCE: IEV 461-10-17]
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200 3.17
201 bolted-type separable connector
202 separable connector in which the electrical contact is made by a bolted device
203 [SOURCE: IEV 461-10-18]
204 3.18
205 tracking
206 progressive formation of conductive paths, which are produced on the surface or within a solid insulating
207 material, due to the combined effects of electric stress and electrolytic contamination
208 Note 1 to entry: Tracking usually occurs due to surface contamination.
209 [SOURCE: IEV 212-11-56]
210 3.19
211 erosion
212 wearing away of insulating material by the action of electric discharges [SOURCE: IEV 212-11-55]
213 3.20
214 metallic housing
215 metal enclosure in intimate contact with the outer screen of a separable connector and having at least the
216 same current carrying capacity to earth as the metallic screen of the cable with which the separable connector
217 is to be used
218 3.21
219 U
0
220 rated power-frequency voltage between conductor and earth or metallic screen, for which the cable accessory
221 is designed
222 3.22
223 U

224 rated power-frequency voltage between conductors for which the cable accessory is used
225 3.23
226 U
m
227 maximum value of the 'highest system voltage' for which the cable accessory is used
228 4 Current
229 The continuous current rating of a termination or joint for impregnated paper insulation power cables shall be
230 in accordance with the appropriate cable specified in HD 621 and shall be suitable for operation at the rated
231 current and under short circuit fault conditions at the temperatures stated therein.
232 The current rating of a separable connector is governed by the current rating of the mating bushing, (see EN
233 50180 and EN 50181).
234 5 Components
235 5.1 Connectors
236 Connectors used within the accessory shall comply with EN IEC 61238-1-3 where applicable, or with another
237 relevant standard or specification.
238 Users should be aware that accessory performances and compatibility shall be checked if the connector
239 installed in the accessory is different from that used for the accessory qualification. Compliance is given only
240 with the connector used in the tests.
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
241 5.2 Materials
242 It is not a pre-requirement for compliance with this performance standard but, if component material
243 characterization is required, the relevant part of EN 50655 (series) shall be used.
244 6 Test assemblies
245 6.1 Identification
246 6.1.1 Cables
247 The cables used for testing shall comply with HD 621.S1 as applicable.
248 Constructional details of the cables shall be identified as given in Annex A.
249 6.1.2 Connectors
250 Connectors used within the accessories shall be identified by the specification with which they comply.
251 Connectors used within the accessories shall be identified as in Annex B.
252 6.1.3 Accessories
253 Accessories to be tested shall be correctly identified with respect to
254 — name of manufacturer or supplier,
255 — type, designation, manufacturing date or code,
256 — minimum and maximum cross-sections, material and shape of cable conductor,
257 — minimum and maximum cable insulation diameters,
258 — connector type(s),
259 — rated voltage (see 1.3),
260 — installation instructions (reference and date),
261 — list of kit contents.
262 6.2 Cable conductor cross-section
263 Unless otherwise specified, the conductor cross-section shall be
2 2 2 2
264 — for terminations, joints or stop ends; 120 mm or 150 mm or 185 mm or 240 mm ,
265 — for separable connectors, as indicated in Table 1 for each rating, using either aluminium or copper
266 conductors.
267 6.3 Assembly
268 Accessories shall be assembled in the manner specified in the manufacturer's instructions, with the grade and
269 quantity of materials supplied. A joint designed for crossed cores shall be so assembled.
270 6.4 Terminations
271 Terminations shall be tested using the arrangement and with the number of samples detailed in Figure 1.
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
272 6.5 Terminal boxes
273 A termination intended to be used in a metallic terminal box shall normally be tested in the specified terminal
1
274 box, which shall conform to the relevant standards .
275 For practical reasons, it is permissible to carry out the tests with the terminations enclosed in a test terminal
276 box fabricated from rigid metallic mesh or from insulating material lined with metal foil. The box shall allow
277 humidity ingress.
278 The test terminal box shall be of the same shape and dimensions (e.g. creepage lengths and clearances) as
279 the specified terminal box and be provided with conductor terminals and bushings of the type used in service.
280 When only one of the termination samples is required to be tested in the terminal box (see 7.7), the remote
281 end of the test cable may be terminated by any suitable means.
282 6.6 Joints and stop ends
283 Joints and stop ends shall normally be designed and tested to withstand a height of water of 1 m (10 kPa
284 (0,1 bar)).
285 For special applications and in situations subject to a high water table or prone to flooding, this height of water
286 may be insufficient to ensure the satisfactory performance of the moisture seals. In such cases, upon
287 agreement between manufacturer and user, the accessories shall be tested using an increased water height
288 of 20 m (200 kPa (2,0 bar)).
289 The chosen water height shall be recorded in the test report.
290 Testing at one water height will achieve compliance for that pressure only. Testing at both 1 m and 20 m water
291 heights will achieve compliance for those water heights and all intermediate pressures.
292 Where a branch joint is being tested, only the main cable shall carry heating current.
293 6.7 Separable connectors
294 The cross-section of the test cable shall be as defined in Table 1.
295 Tests on separable connectors shall be performed with the separable connector installed on its mating
296 bushing.
297 Unscreened separable connectors shall be tested at the minimum phase-to-phase and phase-to-earth
298 clearances recommended by the manufacturer.
———————
1
For example EN 50464-2-2:2007.
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oSIST prHD 629.2 S3:2023
prHD 629.2 S3:2022 (E)
299 Table 1 — Test cable conductor cross-sections for separable connectors
Rating of separable Cable conductor cross-section
connectors
2
mm
Cu Al
a a
250 A
400 A 150 240
a a
630 A
a a
800 A
a a
1 250 A
NOTE 1 The current value shall be sufficient to achieve the specified temperature
of the conductor, (see EN 61442:2005, 9.1).
NOTE 2 The use of the cross-sections in Table 1 may lead to over-heating of the
bushing while achieving the required conductor temperature. Under these
circumstances, it is permissible to use a conductor one size smaller. If bushing failure
occurs, the test will be declared void (see 9.3).
a
under consideration
300 6.8 Test arrangements and number of samples
301 These are detailed in Figures 1 to 5.
302 7 Range of compliance
303 7.1 For terminations, joints and stop ends, compliance for one type of accessory for the range of cable
2 2
304 to 300 mm shall be obtained by successfully completing all the
conductor cross-sections from 95 mm
305 appropriate tests of Tables 2 to 5 on one of the cross-sections specified in 5.2.
306 For separable connectors, compliance for one type of accessory for the range of cable conductor cross-
307 sections given in Table 1A shall be obtained by successfully completing all the appropriate tests of Table 6 or 7
308 on the cross-section specified in Table 1.
309 Extension of range of compliance for the same type of accessory to larger or smaller cable conductor cross-
310 sections shall be obtained by successfully completing the additional test sequence in Table 9, on the
311 appropriate larger or smaller cross-section.
312 For extension of compliance of separable connectors to larger cable conductor cross-sections, the test current
313 shall be limited to the rating of the mating bushing.
314 Compliance shall extend to the use of an accessory on cables of the same U as the test cable but with greater
0
315 nominal insulation thickness. The converse shall not apply.
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oSIST prHD 6
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